/Engine/Plugins/Experimental/PCG/Source/PCG/Public/Metadata/PCGMetadata.h
Initializes the metadata entry key. Returns true if key set from either parent
bool InitializeOnSet ( [PCGMetadataEntryKey](API\Plugins\PCG\Metadata\PCGMetadataEntryKey) & InKey, [PCGMetadataEntryKey](API\Plugins\PCG\Metadata\PCGMetadataEntryKey) InParentKeyA, const [UPCGMetadata](API\Plugins\PCG\Metadata\UPCGMetadata) * InParentMetadataA, [PCGMetadataEntryKey](API\Plugins\PCG\Metadata\PCGMetadataEntryKey) InParentKeyB, const [UPCGMetadata](API\Plugins\PCG\Metadata\UPCGMetadata) * InParentMetadataB )